Dredger



E. R'. KOON.

(No Model.)

DRBDGER.

Patented June 5, 1883*.

UNITED STATES i PATENT OFFICE.

HENRY R. KOON, OF ROME, NEYV YORK.

DREDGER.

SPECIFICATION forming part of Letters Patent No. 278,975, dated June 5, 1883.

Application filed February 5, 1883. (No model.)

To @ZZ whom it may' concern,.-

Be it known that I, HENRY It. KooN, a citizen of the United States, and a resident of Rome, county of Oneida, and State of' New York, have invented new and useful Improvements in Dredgers, of which the following is the specifica-tion.

The object ofmy invention is to provide a simple, inexpensive, and efficient vdevice for deepening the channels of rivers or streams, removing sand or mud therefrom, and for preventing the formation of sand bars or remov= ing the same when formed. I accomplish this byv means of a curret-defleetor forming an automatic dredger composed of two or more plates, the upper edges placed at different elevations, so inclined that the current of the river or stream, following the angle of deflection, will impinge upon the bottom or side, and thereby remove the sand or mud immediately beneath and in front of the base of the deflected plates. The inclined plates may be secured to a frame with feet or rests, so that when placed upon the bottom of the river the base-line of the inclined plates will be suf'- ficiently elevated above the line of the bottom to permit the deflected current to have a free passage thereon. I attain the objects desired by arranging the plates as shown in the accompanying drawings, in which- Figure I is a perspective view of the automatic dredger.' Fig. 2 is a sectional view of set at a proper angle to best secure the deflection of the current. b b are the sides or frame to which the plates are secured. l d d d are the standards, and c e c c the f'eet or rests thereon.

In Fig. 2, a a a aare the inclined plates; f ffj', the flanges on the inside of' the frame I, to which the plates a a. a a are secured; d d,

the standards, and c e the feet or rests fastened thereto below the line of the base of the inclined plates.

In Fig. 3, c is, an inclined plate; g, the bottom plate projecting therefrom, and h the aperture or opening at the angle of junction.

The inclined plate, as shown in Fig. 3, may be secured, with others of like construction, to a frame, as in Figs. l and 2, or suspended in the water near the bottom by means of a chain or rope. widths, so that each one will present to the current a portion of its deecting surface. They may be of any convenient width or length,

and may be suspended from boats or floats, or

allowed to rest upon the bottom.

The plates, frame, standards, and feet may be constructed of wood or iron or other suitable material.

I do not confine myself to any particular method of securing the plates to the frame. They may be riveted to flanges upon the inside of the frame or keyed thereto.

The dredger can be raised or lowered by means of chains or ropes attached to rings or hooks in the frame; and, if necessary, the dredger can -be kept in position by using a drag or anchor. By attaching it to a buoy having feet and inches indicated on its side the progress made in excavating can be determined from time to time.

The plates should be of different The sides or banks of rivers below the wa- 1. In a dredger, aseries of deilccting-plates, 9

whose upper ends are at different elevations, arranged in succession in a main supportingframe, substantially as set forth and described.

2. In a dredger, an inclined plate forming a deilecting-blade having a lower plate pro- IOO jeetug therefrom and an aperture or openings at the angle of junction, substantially as and for the purposes set forth.

3. In a dredger, deectiug-plates, in combi- 5 nation with frame b b, standards d d d d, feet or rests e e e e, and anges f fff, substantially as und for the purposes set forth. A

4. In a dredger7 deeoting plate orblade u,

bottom plate or proj eoton, y, and aperture or opening JL, arranged and combined lsubstau- 1o tially as L'Lnd for the purposes set forth.

HENRY R.- KOON.

fvtnesses:

H. A. BALL, R. B. TYLR. 

